共查询到18条相似文献,搜索用时 93 毫秒
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简要地说明了电子动量谱学的特色、意义和发展情况.概要地描述了本实验室最近研制成功的一台第二代电子动量谱仪的结构和达到的性能指标,以及利用该谱仪所取得的一些物理和化学研究成果.扼要地说明电子动量谱学的发展趋势. 相似文献
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文内报告了在改进后的电子动量谱仪上所做的Ar(3p)的电子动量谱实验结果,所测结果同最新的CI理论结果作了比较 相似文献
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利用第三代电子动量谱仪首次获得了四氢呋喃和二恶烷HOMO轨道的电子动量分布,并将实验结果与不同构象的理论计算进行了比较,四氢呋喃的C1,Cs构象和二恶烷C2h构象的理论曲线分别与各自实验结果符合较好. 相似文献
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首次用基于格林函数ADC(3)方法研究电子动量谱,并利用该方法和新研制的高效率高精度电子动量谱仪研究了CH2F2的价轨道和伴线结构. 相似文献
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利用第三代电子动量谱仪研究了苯甲醇(C_6H_5CH_2OH)分子的最高占据轨道(HOMO)和次最高占据轨道(N-HOMO)电子动量谱,给出了外价轨道的电离能谱信息.实验在非共面对称几何条件下完成,入射电子的能量为2400 eV加结合能.通过密度泛函方法计算得到了苯甲醇分子最高和次最高占据轨道的动量谱,理论与实验结果符合较好. 相似文献
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介绍利用作者最近研制成功的先进的多功能(e,2e)电子动量谱仪实验装置测量得到的He原子电离能谱和He的1s电子动量谱实验结果。 相似文献
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对作者所在实验室最近完成的He原子电子动量谱学实验结果进行了详细的理论分析。在平面波冲量近似和扭曲波冲量近似下,利用三类典型的He原子基态波函数,对Weigold几何条件下的(e,2e)反应的三重微分截面进行了计算,并与实验结果作了详细的比较,结果表明L(1)电子动量谱学是直接获取电子波函数信息的有用方法;(2)平面波冲量近全民族 扭曲波冲量近似得到的电子动量谱形状的差别并不大。 相似文献
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电子能量损失谱学和电子动量谱学 总被引:1,自引:0,他引:1
电子能量损失谱学和电子动量谱学经过近30年的发展已成为原子分子物理的一个重要研究领域,并在化学、聚变等离子体和凝聚态物理等方面获得重要应用.文章介绍了它们的基本原理、最新进展和应用. 相似文献
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MAO Zhen-Lin 《中国物理C(英文版)》1988,12(3):298-306
A non-focusing magnetic spectrometer design for electron scattering in medium energy region is proposed.The positions read out from the position-sensitive detectors in the spectrometer are used for track reconstruction and momentum measurement by means of a computer program.The construction of this spectromenter is rather simple and there is no special technique and element for correction to aberration.It is suitable for usage of spectrometer with large solid angle and wide momentum range.The momentum resolution,momentum range and acceptance in our case are calculated by Monte Carlo simulation. 相似文献
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Chen Zhangjin Shi Qicun Chen Ji Xu Kezun Department of Modern Physics University of Science Technology of China Hefei 《原子与分子物理学报》1997,(1)
ELECTRONMOMENTUMSPECTRAOFEXCITEDHe(21S)ANDHe(23S)ChenZhangjinShiQicunChenJiXuKezunDepartmentofModernPhysics,UniversityofScien... 相似文献
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THE VERTICAL INTEGRATED MOMENTUM SPECTRUM OF THE MUON WITH MOMENTUM LARGER THAN 4 GeV/c AT 3220m ABOVE SEA-LEVEL 下载免费PDF全文
JING GUI-RU HUO AN-XIANG YAN YU-KUI WANG LI-AN LI YAN-GUO SU DENG-JI MENG XIANG-CHENG YAO WEI-ZHONG ZHOU YIN-ZAO PENG SHAO-HUA WANG LI-HUI 《中国物理C(英文版)》1978,2(5):417-422
At an altitude of 3220 meters above sea level in Yunnan Province, we measured, by using a G-M counter-magnetic spectrometer, the vertical integratted momentum spectrum of the cosmic muon with momentum larger than 4 GeV/c. The spectrum obtained from this experiment is expressed by a power function in the form of I(>p)=Q (p+4)-1.86±0.06(cm-2·sr-1·s-1), where p is in GeV/c and Q is a constant. We also measured the charge ratio of muon in the 4—23 GeV/c momentum range. The result is Nμ/Nμ-=1.26±0.11. The error in the momentum measurement with spectrometer has been discussed and calculated. 相似文献
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Following the work of Berakdar, the momentum correlation in the three-body Coulomb continuum problem is considered by the introduction of effective Sommerfeld parameters for both symmetric and asymmetric geometry. The triple differential cross sections for electron impact ionization of atomic hydrogen at incident energies of 54.4 and 150 eV in asymmetric geometry are calculated. Results are compared with the related measurements and the only existing theoretical results of the convergent close-coupling method. They are in good agreement with experiment, though some small quantitative discrepancies remain. 相似文献
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